Question 642198
Mike can cut a 40 foot by 20 foot yard with a push mower in 25 minutes.
 At this rate, how many more minutes would it take him to cut a 40 foot by 30 foot yard?
:
Find the time (t) to cut the larger lawn
{{{(40*20)/(40*30)}}} = {{{25/t}}}
cross multiply
:
Find the difference in time